diff --git a/etc/rc.d/diskless b/etc/rc.d/diskless
index c5cffb05a0df..6426caf5bdb8 100644
--- a/etc/rc.d/diskless
+++ b/etc/rc.d/diskless
@@ -49,10 +49,7 @@ mount_md()
 	if [ -n "$4" ]; then
 		bpi="-i $4"
 	fi
-	/sbin/mdconfig -a -t malloc -s $1 -u $3
-	/sbin/disklabel -r -w md$3 auto
-	/sbin/newfs $bpi /dev/md$3c
-	/sbin/mount /dev/md$3c $2
+	/sbin/mdmfs $bpi -s $1 -M md$3 $2
 }
 
 # If there is a global system configuration file, suck it in.
diff --git a/etc/rc.d/initdiskless b/etc/rc.d/initdiskless
index 6e47bb9a2f00..38fab7009ea6 100644
--- a/etc/rc.d/initdiskless
+++ b/etc/rc.d/initdiskless
@@ -67,10 +67,7 @@ chkerr()
 
 mount_md()
 {
-	/sbin/mdconfig -a -t malloc -s $1 -u $3
-	/sbin/disklabel -r -w md$3 auto
-	/sbin/newfs -i 4096 /dev/md$3c
-	/sbin/mount /dev/md$3c $2
+	/sbin/mdmfs -i 4096 -s $1 -M md$3 $2
 }
 
 # DEBUGGING
diff --git a/etc/rc.d/resolv b/etc/rc.d/resolv
index c5cffb05a0df..6426caf5bdb8 100644
--- a/etc/rc.d/resolv
+++ b/etc/rc.d/resolv
@@ -49,10 +49,7 @@ mount_md()
 	if [ -n "$4" ]; then
 		bpi="-i $4"
 	fi
-	/sbin/mdconfig -a -t malloc -s $1 -u $3
-	/sbin/disklabel -r -w md$3 auto
-	/sbin/newfs $bpi /dev/md$3c
-	/sbin/mount /dev/md$3c $2
+	/sbin/mdmfs $bpi -s $1 -M md$3 $2
 }
 
 # If there is a global system configuration file, suck it in.
diff --git a/etc/rc.d/tmp b/etc/rc.d/tmp
index c5cffb05a0df..6426caf5bdb8 100644
--- a/etc/rc.d/tmp
+++ b/etc/rc.d/tmp
@@ -49,10 +49,7 @@ mount_md()
 	if [ -n "$4" ]; then
 		bpi="-i $4"
 	fi
-	/sbin/mdconfig -a -t malloc -s $1 -u $3
-	/sbin/disklabel -r -w md$3 auto
-	/sbin/newfs $bpi /dev/md$3c
-	/sbin/mount /dev/md$3c $2
+	/sbin/mdmfs $bpi -s $1 -M md$3 $2
 }
 
 # If there is a global system configuration file, suck it in.
diff --git a/etc/rc.d/var b/etc/rc.d/var
index c5cffb05a0df..6426caf5bdb8 100644
--- a/etc/rc.d/var
+++ b/etc/rc.d/var
@@ -49,10 +49,7 @@ mount_md()
 	if [ -n "$4" ]; then
 		bpi="-i $4"
 	fi
-	/sbin/mdconfig -a -t malloc -s $1 -u $3
-	/sbin/disklabel -r -w md$3 auto
-	/sbin/newfs $bpi /dev/md$3c
-	/sbin/mount /dev/md$3c $2
+	/sbin/mdmfs $bpi -s $1 -M md$3 $2
 }
 
 # If there is a global system configuration file, suck it in.
diff --git a/etc/rc.initdiskless b/etc/rc.initdiskless
index 6e47bb9a2f00..38fab7009ea6 100644
--- a/etc/rc.initdiskless
+++ b/etc/rc.initdiskless
@@ -67,10 +67,7 @@ chkerr()
 
 mount_md()
 {
-	/sbin/mdconfig -a -t malloc -s $1 -u $3
-	/sbin/disklabel -r -w md$3 auto
-	/sbin/newfs -i 4096 /dev/md$3c
-	/sbin/mount /dev/md$3c $2
+	/sbin/mdmfs -i 4096 -s $1 -M md$3 $2
 }
 
 # DEBUGGING